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A bottle filled with previously moistened mustard seeds and water was screw capped tightly and kept in a corner. It blew up suddenly after about half an hour. The phenomenon involved is

1. diffusion
2. imbibition
3. osmosis
4. d.P.D

Correct answer: imbibition

Solution

Mustard seeds absorb water rapidly by imbibition, causing them to swell. In a tightly sealed bottle, this expansion builds pressure until the bottle bursts.

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